Winding machine



y 1940- G. KAHLISCH 2,208,930

' WINDING MACHINE I I Filed June 12, 1937 5 Sheets- Sheet 1 July 23, 1940.

G. KAHLISCH WINDING MAKCHINE Filed June 12. 1937 5 Sheets-Sheei 2 ii] mm, mm i July 23, 1940.

G. KAHL .ISCH

WINDING MACHINE Filed June 12, 1937 5 Sh.'.-ets-Sheet 3 u 23, 1940- s. KAHL ISCH 2.208.930

WINDING MACHINE 7 Filed June 12, 1957 s Sheets-Sheet 4 I llllllllllllllllllmlllllllflflllmllll Judy 23, 1940. G. KAHLISCH 2,208,930

WINDING MACHINE Filed June 12, 1937 5 Sheets-Sheet 5 Patented July 23, 1940 UNITED STATES PATENT n OFFICE WINDING MACHINE Application June 12, 1937, Serial No. 147,885

In Germany June 12, 1936 4 Claims. (.01. 242-355) The patent specifications 2,010,465 and 2,052,895 describe and claim winding machines with stationary winding stations having mechanism for feeding the skewers or holders with full creel or paying-off bobbins, the full creel bobbins being conveyed, by means of an endless conveyor. or the like, opposite the holders or skewers, which are positioned in a plane above the conveyor belt and parallel thereto, and the creel bobbins being skewered in groups. According to the said specifications the conveyor belt and the holders afe made shiftable so as to be brought in alignment for'transferring the bobbins, moreover the conveyor is made displaceable towards the holders and the shifting and displacing mechanism is so formed that the conveyor belt and the holders are automatically mutually aligned and the bobbins are then transferred to the holders by displacing the conveyor belt. The design and operation of such devices has been considerably simplified thereby and themanufacturing costs have been reduced, achieving at the same time a very careful handling of the bobbins.

It is the object. of my present invention to simplify the operation and attendance of. such winding machines. To this end I use a travelling thread tying-mechanism, known per se, and I place the leading end of the yarn of each creel bobbin, at the conveyor charging stations, in such a position at the front end of the bobbin lying on the conveyor, that at the winding station these ends can be easily moved into the path of the travelling thread tying mechanism, i. e. by hand orautomatically. Hereby it is further rendered possible to simplify the tying of. the yarn ends of creel bobbins automatically conveyed to the winding stations, with the tail-endsof the spools wound before, by associating with the conveying means additional receiving means into which the said yarn end can be placed at the conveyor charging station. In addition, a lever arm may be provided, at the front end of which a thread catching device is so disposed that the leading yarn end can be automatically swung into the path of the travelling thread" tying mechanism when changing the bobbins. Hereby it is also possible to so form the transfer device for the yarn' ends which moves these ends into the preparatory-position for the thread tying mechanism, that the leading ends of the creel bobbins are seized directly, while thetail-ends of the wound bobbins areseized by suction, after preliminary finding, then moved into the path of the thread tying mechanism, either directly by means of the suction tubes or by meansof. thread catchers associated therewith. The transfer device for the leading yarn end of the creel bobbin may be a suction tube with an enlarged end in the form of a bell, so that it can be put over the end of the bobbin the thread of which is to be seized. The suction tubes may have associated with them thread catchers provided with an eyelet which can be moved into a position such that the thread will be sucked through the eyelet.

The invention will be better understood by ref.- erence to the following detailed description in connection with the accompanying drawings, showing by way of example, and schematically, some embodiments of my novel .device. Identical reference numerals have been used for parts having the same function as the corresponding parts of patent specification 2,052,895. In the drawings Fig. 1 is a vertical section of a winding machine as shown in Patent 2,052,895, including. however, a travelling knotter;

Fig. 2 is a vertical section of. a winding machine similar to Fig. 1, showing a differently mounted knotter and additional means for automatically swinging the leading yarn end of the creel bobbin into the path of theknotter;

Fig. 2a. is a detafl view in front elevation of cam 9a and associated parts; Fig. 2b is a detail view in associated parts;

Fig. 3 is a front elevation of the machine shown in Fig. 2 with parts omitted;

Fig. 4 is a vertical section of a winding machine showing suction transfer devices for automatically finding the thread ends and for automatically feeding these endsto the knotter;

Fig. 5 is a vertical section of a machine similar to Fig. 4, but in a schematic view and with a modified construction of the automatic thread finding and transfer device for the tail-end of the winding bobbin- Fig. 6 is a diagrammatic view of a form of transfer device.

Referring now to Figs. 1 to 3 of the drawings, an endless conveyor, such as chain I, a belt or the like, is mounted in a movable frame in the same manner as described in Patent 2,052,895.- This frame may consist of brackets 2 and U- shaped iron bars 3. The bars 3' serve at the plan of cam 9 and -10 modified same time for guiding lengthwise the endless according to the length of the creel bobbins.

. The angle iron 6 acts as a counter-support or pressure member when placing the creel bobbins 5 on the spindles of the bobbin holder 1. The endless chain I may be driven by chain wheels 8 (Fig. 3'), in the manner known per se. 'The brackets 2 of the movable conveyor frame or carriage are guided by means of rollers I running on rails II which are mounted on the machine frame. The 'holders 1 for the creel bobbins are disposed for a plurality of winding stations on a common rod I2 which is rotatably mounted in bearings I3. These bearings I3 in turn are fixed on rods I4 which are displaceable lengthwise in holders I5 secured to the machine frame. The rods I4 rest with their lower end faces on cam discs I6 which are mounted for the-corresponding number of winding stations on a common shaft I1 and are rotatable with this shaft, which is journalled in bearings IB. The bearings I8 are mounted on angle irons I9 of the machine framev 20. Mounted on the shaft I! of the cam discs I5 are cranks 2| which are in an articulated connection with the movable frame or carriage 2, 3 by means of links or connecting bars 22. The shaft I! is preferably automatically driven and controlled, and the rods I4,

the bearings I3 mounted thereon, and the rod I2 -;the bobbins can be transferred to the spindles or skewers of the holder 1, withthe aid of the bar '6,'the bobbins being guided over their whole length in their cradles 4. Carriers M for the' winding bobbins 42 (which are not shown in. the drawings of the above mentioned earlier specification 2,052,895) together with the appertaining yarn tensioners 43 have been shown in the drawings of the present specification, the tensioners being illustrated in the manner required for the operation according to my present invention.

Referring to Fig. 1, one of the usual thread guiding devices 44 positioned in the path of the travelling knotter 45, formed integral with its motor 51, is associated with the thread tensioners 43. The knotter support 46 is guided on the :machine frame 20 by means of rollers 47, 48 50 bearing against rails 49 and 5| and is automatically displaceable by means of the chain 52. The knotter can be guided invarious relations to the bank of skewers, for example according to Fig. 1 behindthe bank, according to Fig. 2 in front of the bank, and according to Figs. 4 and 5 i above the bank. Figs. 2 and .3 show notched holders 53 which are hingedly connected to the bar 6, and thread catchers 55, 56, 56a operated by means of arms 54. The arm 54 may be in the form of two-armed levers rockably mounted on rod I2 and. having downwardly extending arms 54a. engageable by .the slanting face of a cam 9 fixed to the conveyor, to swing the thread catchers from the full line position of Fig. 12 to the dotted line position. This is the same cam which engages the downwardly directed peg of the bobbin holder 1 to turn the bobbin holder a quarter revolution and thus bring the new bobbin into paying off position. The thread catchers drop back to the full line position as soon as the cam 9 has passed, being started by a second cam 9a fixed to the support of cam 9. Instead of the cam 9 an axially displaceable cam on the bobbin carrier may engage the lever 54 to swing it up, then release it. A hopper I00 at the conveyor charging station holds a supply of full bobbinsin readiness to be laid in the cradles 4 of the conveyor by the attendant.

The machines shown in Figs. 1 to 3 are oper-.

ated in the following manner: When a new supply of creel bobbins is to be prepared for mounting in the bobbin holders, the conveyor, standing in' the position shown in Fig. 1, is operated to carry the bobbin cradles 4 successively past the charging point, which is shown at the right in Fig. 3. The attendant lays a bobbin in each cradle as itgoes by, at the same time laying the leading end of the bobbin yarn in position to be readily transferred to the knotter at a later stage in the operation. In the machine shown in Figs. 2 and 3 the leading end is laid in the notched holder 53, stretched taut so as to be in position to be grasped by the automatic transfer device comprising the thread catchers 55, 55, 5611. When a full complement of bobbins stands'opposite the row of bobbin holders the shaft I1 is rotated and the bobbins are automatically skewered. That is to say, the rods I4 drop'off the .high part of cams I6 and the forwardly directed pegs of the bobbin holders come into alignment with the bobbins oncradles 4. Continued rotation of the shaft I'I draws the conveyor. frame to the right and skewers the bobbins. In Fig. 1 there is a cam 9 which engages the downwardly directed pegs of the bobbin holders as the conveyor travels and turns the bobbin holders a -quarter revolution, swinging the newly skewered bobbins up-to paying off position and discharging the old bobbin tubes in the manner described in Patent No. 2,052,895. The trailing end of the winding bobbin 42, which has been swung up to the lotted line inoperative position,

and the leading end of the new bobbin are of winding stations it ties the ends of yarn and the winding proceeds by throwing the winding package 42 into' contact with the driving roll I I3.

In Fig. 2 the step of bringing up the leading end of the new bobbin to the knotter is performed automatically by the thread catchers 55, 56, 56a. The cam '9, in this case, has the additional function of swinging up the arms, 54 when the thread catchers have engaged the span of thread extending from the bobbin to the holder 53. It is then only necessary-for the attendant to grasp the trailing end of the winding package and pull it around fingers 56a and 55, catching it in the thread catcher 55 beside the leading end of the yarn of the new bobbin. The span of threads extending between finger55 and catch 55 lies across the path of the knotter 45. After in the movable support separately from the 7 knotter, by means of a worm drive 58 acting on a shaft 58. The knotter is driven from shaft 59 through chain 66, sprocket wheel 6| on shaft 52, and chain ||i|.

For finding the yarn end of the winding bobbin .a roller 16 is used to'rotate the winding bobbin 42 backward after it has been disengaged from its driving means. The roller 18' is driven directly (Fig. 5) by means of therchain 66, or with the aid of a further chain68 (Fig. 4) and is mounted on a shaft 69, at one end of the' twoarmed lever 65. The lever 65 is rockably mounted on a shaft 66a and is operated from a cam 64 on shaft 62 by means of a rod 63 jointed to its opposite end. In Fig. 4 a suction tube 14 is pivotally mounted at I02 on the frame 46 and communicates with a tube 82 which is exhausted by a pump 84. The tube 14 is normally held in the-full line position by a coil'spring I03, but

can be swung up to the dotted line position by a link 1| articulated to an arm I84 on the tube and actuated by a cam 12 on shaft 62. In the dotted line position the mouth ofthe tube 14 is pressed against the raised winding package 42, while in the full line position it has transferred (the trailing end of yarn from the winding package to position to be acted upon by the knotter 45. In Fig. 5 the suction tube 140. is fixed in such'a position that its mouth stands in'proximity to the winding package when the latter is turned over against the reversing roller 18a. The roller 10a is driven by a chain 66 from shaft 59, which is rotated through a worm drive 58 by motor 51. A thread catcher 85 is pivoted at 5 I85 and carriesat its extremity an eyelet I86 adapted to pass into a slot H11 in tube 140. when the thread catcher moves into its dotted line position. The eyelet is thus in position for the thread to be sucked through it by the suction tube 14a. The thread catcher is operated by a cam 12a acting through a link Ha articulated a link 16 articulated to an arm I88 on tube 19,

andactuated by a cam 11 on shaft 62, the tube 19 can be swung from its full line position to its dotted line position to seize the leading yarn end of the bobbin 5. Pivoted near the end of tube- 18 is a yarn catcher 8|. A cam arm ||l9 fixed to the pivot shaft of the yarn catcher 8| is adapted to engage a fixed rod ||8.when the tube I8 swings up to the knotter, to tilt the yarn catcher 8| up into the position shown in Fig. 4, where the yarn is stretched across the path of the knotter.

Instead of.-the suction funnel it also possible to provide a mechanical gripper, according to Fig. 6, without exceeding the scope of my present invention by such a modification, or, to apply anyother known means which are equivalent as to their function or efiect to those described in this specification.

In the operation of the machinesshown in Figs. 4 and 5 the charging of the conveyor and skewering of the bobbins is the same as in Fig. 1. When the bobbin holders have been turned a quarter revolution by cam 9 to bring the new pivotally mounted suction tubes, one adapted to 7 a 'swing said leading end to'position to be acted bobbins into upright position, the knotter travels or tube 19 over the end of the bobbin 5. The

leading end of the bobbin is sucked into the tube and the tube is. then swung by cam 11 from its dotted line position to its full line position, the thread catcher 8| being thrown up by engage.- ment of cam 18 with rod III) to throw the yarn into the range of the knotter 45. Prior to the, upward swing of tube 18 the roller 16 and the tube 14 have been brought into engagement with the raised winding package 42 and this package revolved backward sufilciently to allow the trailing end of yarn to be sucked into the mouth 15 of tube I4. The tube" has also been swung down to its full line position, drawing the trailing end of yarnafter it in position to be engaged by the finger 8| when the tube 19 is thrown up. When the knotter has tiedthe ends together and the roller 10 has been raised from the package 42, the knotter passes on to the next winding station" and thepackage 42 is brought 'into contact with its winding roller. H3. In all instances the creel bobbins 5 are conveyed to the. winding stations with their projecting yarn end cleared and brought into position in the charginto the path of the travelling thread tying j mechanism 45 by hand (Figs.1-3) or automatically (Figs. 4-6).

In the same manner the yarn end projecting from the creel ,bobbin 5.is put into the path of the tying mechanism either by hand (Fig. 1) or automatically (Figs: 2-6) ,-i. e. either during the bobbin changing operation (Figs. 2 and 3) or following this operation (Figs. 4-6).

Having thus described my invention what I claim is:

1. A winding machine comprising a plurality of. supply bobbin holders, a conveyor for bringing ,full bobbins to said holders, a travelling knotter adapted to be moved to each winding station in turn to knot together the trailing yarn end of the winding bobbin and the leading end of the full bobbin, means on said conveyor to hold the leading end of each full bobbin in position to be readily grasped, and a transfer deyice comprising a swinging arm adapted to pick up the leading end from said holding means and transfer it to a position to be acted upon by said knotter.

2. A winding machine comprising a plurality of supply bobbin holders, a conveyor for bringing full bobbins to said holders, a travelling knotter adapted to be moved to each winding station in turn to knot together the trailing yarn end of the winding bobbin and the leading end of the full bobbin, and transfer means for mov ing the leading end of. a full bobbin to position to be acted upon by said knotter comprising'a suction tube having a. bell shaped mouth to fit over the end of a full bobbin to seize the leading end of yarn thereon, said tube being pivoted to upon by said knotter. V

3. Awindlng machine comprising a plurality of supply bobbin holders, a conveyor for bringing full bobbins to said holders, a travelling knotter adapted to'be moved to each winding station in turn to knot together the trailing yarn end of thewinding bobbin and the leading end of the full bobbin, and transfer means comprising two flnd the trailing end of yarn on the winding bobbin and the other adapted to seize the leading end of yarn of a full bobbin, both tubesbeing.

knotterya suction tube adapted to suck the yarn end .from the wound package, a. transfer arm having an eyelet, and means juxtaposing said suction tube and transfer arm to bring the tube and eyelet into axial alignment.

GUSTAV KAHLISCH. 

